Timeout of "session" after authorization in asp.net core (.NET 5) identity, how to make not 20 minutes?

Question

ASP.NET

Good evening. It’s like I’m still studying asp net core, I don’t understand how to regulate the time of the "identity authorization session", that is, not just a session, but user authorization
Everything works and so on, but here's a crash 20 minutes after

Startup.cs authorization

services.AddDbContext<ApplicationDbContext>(options =>
               options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services.AddIdentity<IdentityUser, IdentityRole>(config =>
            {
                config.Password.RequiredLength = 6;
                config.Password.RequireDigit = false;
                config.Password.RequireNonAlphanumeric = false;
                config.Password.RequireUppercase = false;
                config.Lockout.AllowedForNewUsers = true;
                config.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(2);
                config.Lockout.MaxFailedAccessAttempts = 5;
            })
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            services.ConfigureApplicationCookie(config =>
            {
                config.Cookie.Name = "My.Cookie";
                config.LoginPath = "/Account/Login";
                config.Cookie.HttpOnly = true;
                config.SlidingExpiration = true;
                config.ExpireTimeSpan = TimeSpan.FromHours(18);
            });

            services.AddControllersWithViews();

Well, below of course there is

app.UseAuthentication();

app.UseAuthorization();

Through the web config settings it will not help much, since the site will be on nginx, but as I understand it, web config is only for iis, like

Thanks for any help and hint